If you are talking about whether this is better than hecatomb harness, it depends entirely on the mob. If you're facing a low def monster, then the attack bonus is cake over the 5 hits and the DEX/AGL is good too(depending on what you stack). Heca is good for high lvl NM such as Gods because you need the STR to push through the extra high VIT and the ACC bonus helps the ACC issues you get when facing them. A good THF has both and knows when to use which one.
The significant price drop on this item (nearly 50%) is because of the new ACP body, which is better for weaponskills (5 str/dex/agi), however hecatomb harness will still rival it with str/acc
With the level caps going up to 99 by dec most gear will fall in price, this being one of them. However this bit of gear stats can change i know i think mine is great, took me 3 tries to get something decent from the FoV NM's but +10 Evasion on this is not to be mocked.
If your buying this for 10-15k your in the clear as it will take 700 tabs to augment so thats about 7k gil from the pages you would be doing to try and augment this and axp 10k from NPC'n a crap Augment.
If your looking at this Vs the Heca ya can get acc on this too, as for whats better... i am not the right thf to comment there mines a farming tool.